pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / src / java / org / apache / lucene / analysis / CharReader.java

diff --git a/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/analysis/CharReader.java b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/analysis/CharReader.java
new file mode 100644 (file)
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--- /dev/null
+++ b/lucene-java-3.5.0/lucene/src/java/org/apache/lucene/analysis/CharReader.java
@@ -0,0 +1,71 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.lucene.analysis;
+
+import java.io.IOException;
+import java.io.Reader;
+
+/**
+ * CharReader is a Reader wrapper. It reads chars from
+ * Reader and outputs {@link CharStream}, defining an
+ * identify function {@link #correctOffset} method that
+ * simply returns the provided offset.
+ */
+public final class CharReader extends CharStream {
+
+  private final Reader input;
+  
+  public static CharStream get(Reader input) {
+    return input instanceof CharStream ?
+      (CharStream)input : new CharReader(input);
+  }
+
+  private CharReader(Reader in) {
+    input = in;
+  }
+
+  @Override
+  public int correctOffset(int currentOff) {
+    return currentOff;
+  }
+
+  @Override
+  public void close() throws IOException {
+    input.close();
+  }
+
+  @Override
+  public int read(char[] cbuf, int off, int len) throws IOException {
+    return input.read(cbuf, off, len);
+  }
+
+  @Override
+  public boolean markSupported(){
+    return input.markSupported();
+  }
+
+  @Override
+  public void mark( int readAheadLimit ) throws IOException {
+    input.mark(readAheadLimit);
+  }
+
+  @Override
+  public void reset() throws IOException {
+    input.reset();
+  }
+}